Primary Health Care (PHC) aims to provide accessible, scientifically sound, and community-centered care. It serves as both the first level of the health system and a model for clinical practice. Key PHC attributes include first-contact access, long-term patient relationships, comprehensive care, and care coordination, along with family, community, and cultural orientation.To examine how the attributes of Primary Health Care (PHC) influence the health care of migrants, identifying both the potential strengths and challenges of providing care to this population within the primary care context.An integrative literature review was conducted to examine how Primary Health Care (PHC) attributes affect migrant health, identifying key challenges and opportunities. Databases searched included BVS, LILACS, and SciELO using health science descriptors in English and Portuguese.Migration creates significant barriers to health care, including linguistic, cultural, legal, and geographic obstacles. Strengthening Primary Health Care through accessibility, cultural competence, and professional training can improve migrant health and reduce pressure on emergency services. Longitudinal care in Primary Health Care (PHC) goes beyond continuity of care, emphasizing ongoing relationships of trust between patients and professionals. It involves attentive listening, welcoming, and personalized care, which strengthen bonds, enhance problem identification, and improve service effectiveness and quality.Primary Health Care (PHC) for migrants requires more than access alone. While access is crucial as the first point of contact, other attributes—longitudinality, care coordination, comprehensiveness, and cultural competence—are essential for quality care. Sustained patient-provider relationships, culturally sensitive practices, and integrated care networks improve health outcomes, while barriers such as language, legal status, and geographic access continue to challenge equity. Strengthening all PHC attributes together is key to reducing disparities and enhancing the effectiveness of health systems for migrant populations.Effective care coordination in Primary Health Care (PHC) requires a well-structured, connected network of services. Studies show that gaps in coordination, such as in migrant maternal care, undermine service quality, highlighting the need to integrate perspectives of users, health professionals, and the health system.